﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 状态模式
{
    class Program
    {
        static void Main(string[] args)
        {
            //紧急项目
            Work emergencyProjects = new Work(new ForenoonState());
            emergencyProjects.Hour = 9;
            emergencyProjects.WriteProgram();
            emergencyProjects.Hour = 10;
            emergencyProjects.WriteProgram();
            emergencyProjects.Hour = 12;
            emergencyProjects.WriteProgram();
            emergencyProjects.Hour = 13;
            emergencyProjects.WriteProgram();
            emergencyProjects.Hour = 14;
            emergencyProjects.WriteProgram();
            emergencyProjects.Hour = 17;

            //emergencyProjects.WorkFinished = true;
            emergencyProjects.TaskFinished = false;

            emergencyProjects.WriteProgram();
            emergencyProjects.Hour = 19;
            emergencyProjects.WriteProgram();
            emergencyProjects.Hour = 22;
            emergencyProjects.WriteProgram();







            Console.Read();
        }
    }

    //抽象状态
    public abstract class State
    {
        public abstract void WriteProgram(Work w);
    }

    public class Work
    {
        private State state;
        public Work(State d)
        {
            state = d;
        }
        public double Hour  { get; set; }
        public void SetState(State s)
        {
            state = s;
        }
        public void WriteProgram()
        {
            state.WriteProgram(this);
        }

        private bool finish = false;
        public bool TaskFinished
        {
            get { return finish; }
            set { finish = value; }
        }



    }


    //上午工作状态
    public class ForenoonState : State
    {
        public override void WriteProgram(Work w)
        {
            if (w.Hour < 12)
            {
                Console.WriteLine("当前时间：{0}点 上午工作，精神百倍", w.Hour);
            }
            else
            {
                w.SetState(new NoonState());
                w.WriteProgram();
            }
        }
    }


    //中午工作状态
    public class NoonState : State
    {
        public override void WriteProgram(Work w)
        {
            if (w.Hour < 13)
            {
                Console.WriteLine("当前时间：{0}点 饿了，午饭；犯困，午休。", w.Hour);
            }
            else
            {
                Console.WriteLine();
            }
        }
    }



}
